package org.csmzxy2334;

public class 习题 {
    public static void main(String[] args){
        int[] arr3={1,2,3};
        int sum = 0;
        for (int i = 0;i<arr3.length;i++){
            sum += arr3[i];
        }
        System.out.println("数组所有元素的和:" + sum);
        int max = arr3[0];
        for (int i = 1; i <arr3.length;i++){
            if (arr3[i] > max) {
                max = arr3[i];
            }
        }
        System.out.println("数组最大值:" + max);
    }
}
